Browsing by Author "Devi, Anuradha"

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    A Study on Application of Pickling Sludge in Pavements Tiles
    (RTESE, 2019-06) Verma, Sanjay Kumar; Gupta, Rajiv; Singhal, Anupam; Devi, Anuradha
    Spent pickling liquor disposal is not safe according to US K062 the Environmental Protection Agency (EPA) and Hazardous Waste (Management &Handling) Rule, 1989. In the normal practice pickling sludge is being disposed off on both sides of roads and railway tracks to fill low-lying areas. This may cause a severe problem of ground water contamination. In the present study, an attempt has been made to examine the potential of utilizing Solidification and stabilization (S/S) pickling sludge in pavement tiles as a substitute to cement to avoid disposal problem. The results of this work showed that the compressive strength of pavement tiles increases by replacing cement with pickling sludge up to 10%. As per US EPA TCLP test, heavy metal (Fe, Cr, and Ni) concentrations are below detectable limit in the leachate of pavement tiles at 28 days of curing. Thus, sludge-cement pavement tiles can be safely used on the footpath. Reusing pickling sludge as the raw materials of the pavement will not only solve the disposal problem, but also decrease the producing cost of pavement.
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    Utilization of Industrial Waste as a fertilizer in Ornamental Plants
    (RJCE, 2017) Verma, Sanjay Kumar; Gupta, Rajiv; Singhal, Anupam; Devi, Anuradha
    ndustrial waste treatment and its disposal are the major challenges in developing countries. In India, approximately 960 million tonnes of waste are generated annually. Metallurgical industries generate about 39.5 million tonnes of inorganic waste which contains heavy metals. Moreover, metallurgical waste treatment and disposal are the main concerns of researchers. In the present study, steel industry pickling sludge and copper industry tailing waste are used as fertilizer in plantation of oleander plant. The log of plant study shows that the copper tailing and pickling sludge mixture generate promising results. Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) studies the effect of heavy metals in plants uptakes. Barium (Ba) is present in the soil of study area and the plant uptake Ba as a contaminant. It has been observed that Ba content is reduced by 90%, therefore Ba contamination can be reduced by uptake in oleander plant. Uptake of other heavy metals is immaterial.